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Automatic bentonite mixing plant and pump for pipe jacking

2025-11-06 17:23:24

Today, our factory shipped an automatic bentonite mixing plant and pump to a customer in the Philippines. The customer will use it for bentonite injection work in pipe jacking.

An automatic bentonite mixing plant and pump for pipe jacking is a fully integrated, high-efficiency system designed to continuously produce and deliver low-viscosity, thixotropic bentonite slurry to lubricate the annular space between the jacked pipe and the surrounding ground. Automation ensures consistent slurry quality, reduces labor, and enhances operational safety and efficiency—especially critical in long or deep pipe jacking drives.

The role of the bentonite mixing plant and pump in pipe jacking construction:

1. Soil reinforcement: By filling the gap between the pipe roof and the soil through grouting, a composite support structure of "pipe roof + grouting body" is formed, improving the bearing capacity of the soil.

2. Drag reduction during jacking: The grouting fluid forms a lubricating layer on the surface of the pipe roof, reducing jacking friction (the coefficient of friction can be reduced to 0.1~0.3), extending the life of the cutterhead.

3. Seepage Prevention and Leakage Control: The grouting fluid penetrates soil fissures, forming a seepage barrier to prevent groundwater from seeping into the construction area.

Technical advantages of automatic bentonite mixing plant and pump unit:

1. Soil Reinforcement and Drag Reduction: Bentonite grout fills the gap between the pipe roof and the soil, forming a composite support of "pipe roof + grouting body," improving the soil bearing capacity (e.g., surface settlement ≤2mm in the Foshan Dali Town project).

The grout lubrication layer reduces jacking friction (friction coefficient 0.1~0.3), extending cutterhead life, and reducing jacking resistance by 30%~50% in soft soil layers.

2. Seepage Prevention and Quality Control: The grout penetrates soil fissures, forming a seepage barrier (permeability coefficient reduced to 10⁻⁶~10⁻⁷ cm/s), preventing groundwater infiltration.

Automated grout preparation ensures stable grout quality (water-cement ratio fluctuation ≤±0.1), avoiding errors from manual mixing. 3. Improved Construction Efficiency

Integrated design reduces floor space, facilitates transportation, and enables rapid deployment (e.g., the Zhengzhou Metro tunnel boring machine completed grout pool construction and pipeline connection within 24 hours).

Information-based construction (telephone/walkie-talkie linkage) enables timely communication between above-ground and underground operations, meeting the requirements for rapid, uniform, and continuous grouting.

If you provide details like: Pipe diameter, Jacking length, Soil conditions, Project location, etc., I can recommend a suitable automatic bentonite mixing plant and pump configuration or model. Email address: info@gaodetec.com

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